[bluGill]

The one thing printf does better is force me to stop and think about why.

I find that when I use a debugger I fall into the trap of mindless looking at variables, stopping to inspect data (sometimes changing a variable), drilling down into struct members... (That is your exact list except I've never used a debugger that can graph dx/dy though I'm sure that applies too) All the while forgetting that the real goal is to figure out why the program is in the bad state i the first place.

If you can avoid that trap all those tools of debuggers are useful. I sometimes do use a debugger for each of the above things, but I make it a point to limit the time I spend in the debugger.